Finding the Fourth Proportional to 1,494,679,991.40, 2,242,019,987.10 and 511,779,861.92
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Solution
The fourth proportional to 1,494,679,991.40, 2,242,019,987.10 and 511,779,861.92 is: 767,669,792.88
Step by Step Solution
- Step 1: Write the proportion equation
1,494,679,991.40 : 2,242,019,987.10 = 511,779,861.92 : x - Step 2: Convert to fraction form
1,494,679,991.40/2,242,019,987.10 = 511,779,861.92/x - Step 3: Cross multiply
1,494,679,991.40x = 2,242,019,987.10 × 511,779,861.92 - Step 4: Simplify right side
1,494,679,991.40x = 1,147,420,679,419,918,208 - Step 5: Solve for x
x = 1,147,420,679,419,918,208/1,494,679,991.40 - Step 6: Final answer
x = 767,669,792.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.